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这个可以

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程序猿潘先生

#1 Created at ... [Delete] [Delete and Lock User] 
# -*- coding: utf-8 -*-

__author__ = 'Fire-Pan'

import re
s = r'^[A-Za-z\d]+([-_.][A-Za-z\d]+)*@([A-Za-z\d]+[-.])+[A-Za-z\d]{2,5}$'
email = input('请输入邮箱地址:')
if(re.match(s,email)):
    print('格式正确！')
else:
    print('邮箱格式不正确！')

凯迪么拉克

#2 Created at ... [Delete] [Delete and Lock User]

r'^中的'^'这个符号啥意思？

请问先吃饭

#3 Created at ... [Delete] [Delete and Lock User]

^表示开头的意思

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